Quenching apparatus



Nov. 4 1924.

' E. W. EHN

QUENCHING APPARATUS Filed Feb. 12. 1923 12v VENTOR A TTORNE Vs,

' Patented Nov. 4, 1924.

" UNITED STATES PATENT OFFICE.

ERIK W. EHN, OF CANTON, OHIO, ASSIGNO'R TO THE TIMKEN ROLLER BEARING COH- rm, or CANTON, onro,

A CORPORATION OF OHIO.

QUENOHING APIPARATUS.

Application filed February 12, 1923. Serial No. 618,690.

To all witom it may concern:

Be it known that ERIK W. EHN, a sub- I ject of the King of weden, and a resident of the city of Canton, in the county of Stark and State of Ohio, have invented a new and useful Improvement in Quenching Apparatus, of which the following is a specification.

My invention relates to quenching apparatus, and particularly to apparatus intended for quenching upsetting dies and the like in which it is desired to harden a comparatively small portion of the die around a recess, leaving the remainder thereof soft so as to bel able to withstand shocks.

It has for its principal objects to devise aquenching apparatus in which the desired portion of the article to be quenched can be subjected to the operation of the quenching fluid and the remainder thereof be protected from the quenching fluid. The invention consists in the parts and combinations of parts hereinafter described and claimed.

In the accompanying drawing, Fig. 1 is a vertical sectional view of a quenching apparatus embodying my inven tion, some parts being shown in elevation, Fig. 2 is atop plan view thereof; and Fig. 3 is an elevation. Mounted on a suitable base 1 is a block 2 so that has an opening 3 therethrough, which opening is connected with a suitable source of quenching fluid by a pipe 4. The opening is closed by means of a threaded cap 5; from which projects a central nozzle 6 and a plurality nozzles 7 disposed around said central nozzle. Mounted on the block 2 is a shell 3 that is provided with a plurality of openings Removably mounted on said shell 8 is a plate 10. Said plate 10 is conveniently held in position by means of a projecting por ion 11 that fits in the shell 8. Secured a said plate 10 are a plurality of fingers 12 nat have rebent portions 13 distill the central raised portion 14 of which portion rests the die 15 or other art-ale to be quenched. The fingers serve to center or locate the die 15? on the plate'lO.

The base 1 is provided with upstanding portions 16 that have horizontally extending projections 17 and through alining openings in said base and projections extend standards 18. Said standards 18 are held in position by means of eye-bolts 19 or the like that are operated by suitable handles 20. Thus the standards may be raised or lowered. Pivotally secured to one of the standards is a cross-arm 21 that is preferably composed of two metal members secured together at intervals by suitable pins 22, the metal memhere being spread apart somewhat at the mid dle portion ofthe cross-arm to receive a supporting block 23. The free end or handle of the cross-arm is provided with a latch 24 that is adapted to engage a pin 25 on the standard so that the cross-arm is held against upward movement.

Mounted in the block 23 in the crossarm is a pin 26 to whose lower end is secured a plate or disk 27. Secured to said plate or disk 27 as by screws or bolts 28, is an annular member or plate 29 having a flaring or downwardly beveled marginal portion 30 forming a deflector -or hood. Collars 31 on the screws space the plate and the deflector away from each other. Disposed between the upper plate and the block is a s ring 32 that tends to keep the plate an pin in their extreme downward position.

The die 15 is placed on the holder, with its recess 33 communicating with the main nozzle. The reduced axial bore 34 of the die (which is intended to accommodate the knockout member in the finished die) extends from the end of the recess to the end- 33 of the die and passes over them quickly so that all parts of the wall of the re- I cess are evenly hardened and the formation of air pockets is prevented.

Some of the quenching liquid drops down through the opening 37 in the locator plate and thus escapes through the holes in the cylindrical shell. Some of the liquid passes upwardly through the bore of the die, hardsuing the walls thereof toa limited extent and, passing out through the bore of the deflector and over the top thereof. The flarin hood 30 of the deflector carries the quencliing liquid beyond the sides of the die so that none of it touches the die.

The auxiliary nozzles 7 are also disposed so that the quenching liquid therefrom is iven a whirling or spiral motion. The %ore 37 of the locator plate is upwardly tapered and the nozzles 7 are pointed upwardly and at an angle wlth the walls of said bore. The quenching liquid leaving the nozzles moves upwardl with a spiral or whirling motion and strikes the portion 38 of the end of the die that overhangs the opening in the plate, thus hardening a limited portion of the end of the die.

The locator plate may be removed and another plate having an opening of any desired size may be substituted therefor. The standards may be adjusted vertically, so that the device is adapted for use with dies of difierent sizes.

The herein described apparatus makes itpossible to quench recesses in dies and other articles and leave the main body portion unhardened. It applies the quenching fluid in such a way as to avoid the formation of air pockets and it hardens all desired portions evenly. The device is capable of accommodating articles of various sizes. Obviously, numerous changes might be made Without departing from the invention and I do not wish to be limited to the precise construction shown.

What I claim is:

1. A device for quenching articles having a bore which comprises a support for the article being quenched having a hole there- 'through that communicates with the bore of the article, the article being disposed with a portion overlapping said hole, means for spraying the bore of the article with uenching llquid and means for sprayingt e portion thereof that overhangs the hole in-said supportwith quenching liquid;

2. A device for quenching articles having a bore, which comprises a support for the article having an opening that communicates with the end of the bore of said article, means for spraying the bore with quenching liquid, means for spraying with qiillenching liquid that portion of the article t at overhangs the opening in said support, and means for protecting the rest of the article from the quenching liquid.

3. A device for quenching articles having a bore, which comprises a support for the article having an opening that communicates with the endof the bore of said article, means for spraying the bore with quenching liquid, and means for protecting the rest of the article from the quenching liquid, said means comprising a deflector arranged to receive quenching liquid from the bore of the article and carry it away from the article." H v 4. A device for quenching "annular articles having a bore extending therethrough, which comprises a support for the article having an opening in communication with the end of the bore of the article, a plate opposite said support for holding the article on the support, said plate having a hole therethrough, and means for spraying the bore of the article with quenching liquid,

said plate having a flaring portion for receiving the liquid after it has passed through the bore of the article and deflecting the quenching liquid from the sides of the article.

A device for quenching. the bore walls of articles having a bore, which comprises a support for the article having a taperin hole therethrough that communicates wit the bore of the article, the article being disposed with a portion overlapping said hole, -a nozzle in said hole adapted to force a spiral stream of quenching liquid into the bore of the article nozzles adapted to force spiral streams o1 quenching liquid upwardly in said hole in said support and against the portion of the article overhan ing said hole.

6. A device for quenching t e walls of the adapted and arranged to force streams of quenching liquid upwardly in the hole of said support and with a spiral flow, to harden the portion of the die overlapping said hole.

7. A device for quenching the walls of the bore of dies and the like, which comprises a base, a shell thereon, having holes therethrough, a supportfor the die mounted on said shell, said support having a hole therethrough, the die being disposed with its bore communicating-with said opening and with a portion of the die overlapping the opening, a plate for holding the die on the support, said plate having a bore communicating with the bore of the die and having a flaring portion extending beyond the sides of the die, a nozzle which forces quenching li uid into the bore of the die with a spiral ow, and nozzles which force streams of quenching liquid upwardly in the hole of said suppvort'with a spiral flow, to harden the portion of the die overlapping said hole, the

through the hole quenchin liquid escaping the h Ice in said in said p ate and throng shell.

8. A quenching apparatus comprising a base, a support for the work, vertical standard adjustably secured to said base, a crossarm pivotally secured to one of said standards, means for latching said cross-arm to the other standard, a plate supported by said cross-arm for engaglng an article on said support, and means for directing quenching liquid against an article on said support.

9. A quenching apparatus comprising a base, a support for the work, armssecured to said support for centering an article thereon, vertical standards adjustably secured. to said base, a cross-arm pivotally secured to one of said standards, means for latching said cross-arm to the other standard, a plate supported by said cross-arm for en gingan article on said support, and means or directing quenching liquid against an article on said support.

10. A quenching apparatus comprising a base, a support for the work, vertical standard adjustably secured to said base, a crossarm pivotally secured to one of saidstandards, means for latching said cross-arm to the other standard, a plate supported by said cross-arm for engaging an article on said support, resilient means for holding said plate against the article, and means for directing quenching liquid against an article on said support.

Signed at Canton, Ohio, Feb., 1923.

this 8th day of ERIK W. EHN. 

